Hello guys, i come back with BIG News! I managed to fix this issue on my Lenovo y700.
You have to go to Lenovo support page, select your device model and download the latest Intel HD VGA drivers. I had installed a version from 2015 and the latest was from 2016. Unpack the archive but do not run setup because it will fail.
Now go to Device Manager, right-click on Intel HD and choose to upgrade drivers.
Click: Browse My computer - Next - Let me pick from a list of device drivers on my computer - Click on Have Disk -> Browse and open the path where the drivers were unpacked (C:\drivers\Intel VGA Driver\Graphics) and select igdlh64.inf fro x64 OS or igdlh32.inf for X86 OS.
After installation is completed reboot your computer once or twice.
After the first reboot i had a problem with my desktop files missing but it might be due to other things i did to my system. If you encounter this issues just go to C:\windows\system32\config\systemprofile\ and create here a new folder called Desktop. Reboot and everything should be ok.
PS: flux works great after this.